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2019 12 05 library development

Michael Wetter edited this page Dec 5, 2019 · 7 revisions

IBPSA Modelica Library Coordination

Date: December 12, 2019, 8am-9am Pacific Times The purpose of this meeting is to coordinate the development https://github.com/ibpsa/modelica-ibpsa

Meeting information

Join from PC, Mac, Linux, iOS or Android: https://lbnl.zoom.us/my/mwetter

Or iPhone one-tap (US Toll): +14086380968,6614042296# or +16465588656,6614042296#

Or Telephone:
Dial: +1 408 638 0968 (US Toll) or +1 646 558 8656 (US Toll) Meeting ID: 661 404 2296 International numbers available: https://lbnl.zoom.us/zoomconference?m=_h5BuJ686mPy3rWEyKf4NROxLaeOV5J8

Agenda

Klaas to present CONTAM-like presentation.

Filip to present refactor of inverseX (1/X). (See also conditions in https://doi.org/10.1080/19401493.2013.765506) To be discussed next call.

Update on geothermal models (Massimo)

Update to Dymola 2020x (Michael)

Progress on pull requests, https://github.com/ibpsa/modelica-ibpsa/pulls

Participants

Massimo Cimmino
Klaas de Jonge
Antoine Gautier
Jianjun Hu
Filip Jorissen
Donghun Kim
Yash Shukla
Michael Wetter

Minutes

CONTAM presentation by Klaas

US uses more leakage and orifice area, Europe uses more Q = f(dp) equations based on user-provided data, interpolated with cubic spline.

Wind pressure coefficients can be supplied with spline fit in his implementation.

These two components should soon be ready for review. Pending work:

  • make sure wind pressure coefficients is periodic in the angle, rather than having zero derivative at 0 and 360 degree
  • refactor use of cubic spline function so that coefficients are computed only once in the simulation, similar to the fan model.

Geothermal models

New students starts in January. Work should improve accuracy of short-term response.

Massimo works with Iago on model that has no events.

Also works on non-uniform vertical temperature distribution and boreholes in series.

Update to Dymola 2020x

Michael to update CI testing to Dymola 2020x.

Damper models

Antoine tested successfully conversion script, no obsolete models are needed. PR likely before end of year.

Wet coil

Code under internal testing. Donghun to work with Antoine on testing of UAWet and heating mode.

New action items

Michael to review check valve model https://github.com/ibpsa/modelica-ibpsa/pull/1224

Michael to update CI testing to Dymola 2020x.

Klaas to make pull request for new air flow models.

Previous action items

Fluid Property models (RWTH) RWTH intern development of R134a, R410A, R32, R407C, R290 and R744 merge in December, Paper in March - Sorry for not attending last call and today. Unfortunately really busy days recently! Are there further fluid models of interest? We can add some more due to master's thesis.

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